Reciprocating-bed printing press



May 15, 1928. l

c. B. COTTRELL, 3D

monaco/mx@ am PRINTING PRESS Find my 9, 1924 2 sheets-sheet l lNVENTOR May 15, 1928.

C. B. COTTRELL, 3D

REGIPROCATING BED PRINTING PRESS Filed July 9, 1924 2 Sheets-Sheet 2 la@ J.

2? fl lf.

sT/a'gma swlTcH CONTRUL l l POWER UNE MEcHANlsM Box J7y v Y ATTORNEYS shaftb 6, 7.

Patented May 15, 1928.

UNIT-En STATES UALVEBT B. COTTB'ELL, 3D, OF WESTEBLY, RHODE ISLAND, ASSIGNOB T0 C. 1B. COTTBELL PATENT orrlcs.

SONS COMPANY, F NEW YORK, N. Y., A CORPORATION QF DELAWARE.

BEGIPRO'OATING-BED PRINTING PRESS.

applicaties site my s, 1924. smal ne. creeer.

In reciprocating bed printing presses it has been usual to employ devices of various kinds such as springs and cushions forretarding or checking the momentum of the bed before the direction of its travel is reversed. The object of this invention is provide novel means for this purpose, said means, in the present instance, being a reversible (electric motor operatively connected to the bed and reversed by the bed es the bed nears the limits of its movement, so as to cause the motor to exert a resistance 'to the further movement of the bed, the reversing of the motor also serving to cause 1t to help the bed to come up to the required speed as itstarts on its returnstroke.

A practical embodiment of this invention is represented in the accompanying drawin in which 1g. 1 represents a detail slde view of a reciprocating bedv rinting press with my invention applied t ereto.

Fig. 2 represents an end view of the same.

Fig. 3 represents a detail view showing the control mechanism lever thrown into one position.

Fig. e represents asimilar view showing A the lever thrown into the other position..

Fig. 5 represents a diagrammatic view illustrating the reversible motor, control switches and circuits. n

The printing press :trame is denoted by l the wa s by 2, the reciprocating bed by 3, the rack oy 4, the gear by 5 and the mangle The mangle shaft is geared, es usu to the drive shaft 8 which carries the fast end loose pulls 9 and 10. 'Ehe driving belt is denoted y 11 end the belt shiter b 12. y

The e ectric means which l have shown or retarding or checking the momentum of the reciprocating bed as it nears the limits of its movement and for assisting in bringing the bed up to speed es it starts on its return stroke, is as follows:

Any well known or approved reversible electric motor 13 is suitably mounmd in the :treme l. The shaft ld orA this motor is provided with a all times with s rec.: ld, carried by the reciproceting bed 2. 1lf'he control mechanism box l? is electrically connected to the motor lt through the wiring 18 and to the switch 19, through the wiring 20. The switch bangear which meshes at dle 21 is operated by the belt shifter 12, through thev connecting rod 22, whereby the starting of the electric motor 13 is controlled byi the starting and stopping of the press.

Adjustable-abutments 23, 24, carried by the reclprocating bed 3 are arranged to engage their respective arms 25, 26 of a rock lever 27, mounted in the press iframe, which nected by a rod 29 with an arm 30 on the shaft 31 of the control mechanism box 17, to reverse the current in the motor thereby tending to reverse the movement of the motor shaft le just before the bed reaches the limit of its movement in either direction. This not only causes the motor to act as an .electric brake or resistance or retarding or checking the bed, but also causes the motor shaft 14, when permitted to reverse its movement, to help the main drive to bring the bed back to speed after it reverses at the end of each stroke. v

From the above description it will be seen that l have provided an electric means for retarding or checking the momentum of the bed, whlch means is also operable to assist the main drive in 4bringing the bed rapidly up to speed after it reverses its movement, said electric means permitting the elimination of all springs and cushions heretofore used for checking the momentum of the bed and providing a very simple and eiective device 'for this purpose.

It is evident that various changes ma be resorted to in the construction, form an arrangement o the several arts without departing 'from the s irit and scope of my irlvention; hence, l o not wish to limit m Self to the particular embodiment herein shown and described, but

1. ln e reciprocating bed printing press; the bed, :means for reciprocating it and elecm tric means to' check the momentum cie the bed and to help in bringing the bed up to speed as it starts on its return stroke.

2. ln a reciprocating bed printing press, the bed, means `for reciprocating it, and elec tric means operable as the bed nears the limq its or its movement to check the momentum or the bed and to help in bringing the bed up to speed as it starts on its returnstrolre.

3. in a reciprocating bed printing press.

rock lever is provided with an arm 28 contnrn stroke.

dit

5. in a reciprocating bed printing press, the bed, meansi'or reciprocating it, and a reversible electric motor operatively connected to the bed and reversed thereby as the bed nears the limits et its movement, to cliecir the momentum of the bed.

5., a reciprocating bed printing press, the bed, means for reciprocating it, and a reversible electric motor operatively connected to the bed and reversed thereby as the bed nears the limits ofc' its movement, to check the momentum of the bed and to help in bringing the bed upto speed as it starts on its return stroke.

'i'. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor gearedv to 'the bed and reversed thereby as the bed nears the limits of its iptvement, to check the momentum ot the 8. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor geared to the bed and reversed thereby as the bed nears the limits of its movement, to check the momentum of the bed and to help in bringing the bed up to speed as it startson its return stroke.

9. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible electric motor geared to the bed and reversed thereby as the bed nears the limits of its movement, to check the momentum of the bed.

10. in a reciprocating bed printing press, the bed, means for reciprocating it, a revers ible electric motor geared to the bed and reversed thereby as the bed nears the limits of its movement, to check the momentum ci the bed and to help in bringing the bed up to speed as it starts on its return stroke.

l1. In a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor operatively connected to the bed, said bed having devices arranged to reverse the motor as the bed nears the limits of its movement, to check the momentum of the bed.

12. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor operatively connected to the bed, said bed havin devices arranged to reverse the motor as fr. bed near the il... di its movement, to check the momentum of the bed and to help in bringing the bed up to speed as 'it starts on its return stroke.

13. ln a reciprocating bed printing press, r

the bed, means for reciprocating it, a reversible electric motor operatively connected to the bed, said bed having devices arranged to reverse the motor as the bed nears the limits of its movement, to check the momentuin of the bed.

14.111 a reciprocating bed printing press, the bed, means or reciprocating it, a reversible electric motor operatively connected to the bed, said bed having devices arranged to reverse tbe motor as the bed nears the limits of its movement, to ciieclr the momentum o the bed and to help bringing the bed up to speed as it starts on its retnrn stroke.

l5. In a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor geared to the bed, said bed having devices arranged to reverse the motor as the bed nears the limits of its movement, to check the momentum of the bed.

16. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible motor geared to the bed, said bed having devices arranged to reverse the motor as the bed nears tbe limits of its movement, to check the momentum yof the bed and to help in bringing the bed up to speed as it starts on its return stroke. g y

17. in a reciprocating bed printing press, the bed, means for reciprocating it, a reversible electric motor geared to the bed, said bed having devices arranged to reverse the motor as the bed nears the limits ci its movement,to check the momentum oi the bed.

i8. ln a reciprocating bed printing press, the bed, means for reciprocating it, a reversible electric motor geared to the bed, said bed having devices arranged to reverse the motor as the bed nears the limits of its movement, to check the momentum of the bed and to help in bringing the bed up to speed as it starts on its return strolre.

i9. In a reciprocating be'd printing press, the bed, means for reciprocating it, a raclr extending along the bed, abntments posi tioned on the bed, a reversible motor oper atively connected to the bed, and current reversing mechanism operated by said ahntments to reverse the current as the bed nears the limits ci its movement.

l 20. in a reciprocating bed'printing prees, the bed, means for reciprocating it, a recit extending along the bed, abutments adjust- `.ably positioned on tbe bed, a reversible inotor operatively connected. to the bed, and cnrrent reversing control mechanism operated by said abut-,ments to reverse the current as the bed nears the limits of its movement.

21., lin a reciprocating bed printing prees, the bed, means for reciprocating it, a recit extending along the bed, abutments positioned on the bed, a reversible motor geared to the bed, and -current reversing control mechanism operated by said abutments to re- 5 verse the current as the bed nears the limits of its movement. l

22. In a. reciprocating bed printing press, the bed, means for reci rocating it, a. rack extending along the be abutments adjust-- ably positioned on the bed, a reversible mo- 10 tor geared to the bed, and current reversing control mechanism operated by said abutments to reverse the current as the bed nears the limits of its movement.

In testimony, that I claim the foregoing 15 as m invention, I have signed my name this 7th ay of 5% 1924.

CAL iz'r B. COTTRELL, am. 

